Examine source code of Fiorilli Web Extension

{
  "manifest_version": 3,
  "name": "Fiorilli Web Extension",
  "version": "1.0.7",
  "description": "Extensão utilitária dos softwares Fiorilli",
  "author": "Fiorilli SC Ltda",
  "browser_specific_settings": {
    "gecko": {
      "id": "webextension@fiorilli.com.br",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "nativeMessaging",
    "storage",
    "downloads"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_popup": "index.html",
    "default_icon": {
      "16": "assets/icons/icon16.png",
      "48": "assets/icons/icon48.png",
      "128": "assets/icons/icon128.png"
    }
  },
  "icons": {
    "16": "assets/icons/icon16.png",
    "48": "assets/icons/icon48.png",
    "128": "assets/icons/icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ]
    }
  ]
}